Vehicle air conditioning system for separately controlling flow of inside/outside air

Abstract

Provided is an intake system of an air conditioning system for a vehicle, which is configured for simultaneously satisfying two conflict conditions of improving heating performance by increasing the inflow of inside air and of reducing the generation of moisture on a window glass, wherein a scroll case, in which a blower is mounted, is provided with a second partition member for dividing a passage, which is formed at an outlet port and includes a blower chamber around a blower fan, into an upper passage and a lower passage, and a flow guide for guiding air, which is separated by a first partition member and is introduced into the scroll case from an inlet case, to the respective upper and lower passages.

What is claimed is: 
     
       1. A vehicle air conditioning system for separately controlling flow of inside air and outside air, comprising:
 an inlet case formed with an outside air inlet port and an inside air inlet port, a first partition member being mounted in the inlet case, wherein the outside air and the inside air introduced into the outside and inside air inlet ports flow in a separated state; 
 a blower for drawing the inside air and the outside air through the inlet case; and 
 a scroll case in which the blower is mounted, the air drawn by the blower being supplied to the scroll case through an outlet port connected to an air inlet port of an air conditioning case, wherein the scroll case is provided with: 
 a second partition member for dividing a passage, which is formed at the outlet port and includes a blower chamber around a blower fan, into an upper passage and a lower passage; and 
 a flow guide for guiding the air, which is separated by the first partition member and is introduced into the scroll case from the inlet case, to the respective upper and lower passages, and 
 wherein the flow guide is a member having a plate shape, and has a shape that extends inward of the blower fan from an annular ring part forming an edge portion of a suction port in the scroll case, and then extends radially and horizontally toward the blower fan, 
 wherein an upper end portion of the flow guide has two laterally extending tips, wherein both tips are fixedly coupled with a first side and second side of the ring part in a state in which the upper end portion of the flow guide traverses the ring part, and the flow guide has a support part elongated to the ring part from the upper end portion of the flow guide, and 
 wherein the upper end portion and the support part of the flow guide protrude upwards from the ring part by a predetermined height which is greater than zero to support a filter disposed thereabove. 
 
     
     
       2. The vehicle air conditioning system of  claim 1 , wherein
 the first partition member divides an internal space of the inlet case into an upstream inlet chamber connected to the outside air inlet port, and a downstream inlet chamber connected to the inside air inlet port and a suction port of the scroll case; and 
 the first partition member is mounted to divide the downstream inlet chamber into a first introduction passage connected to the upper passage of the scroll case, and a second introduction passage connected to the lower passage of the scroll case. 
 
     
     
       3. The vehicle air conditioning system of  claim 2 , wherein
 the first partition member is formed with a first introduction port which is an inlet of the first introduction passage, and a second introduction port which is an inlet of the second introduction passage; and 
 the inlet case is formed with the outside air inlet port connected to the upstream inlet chamber, a first inside air inlet port connected to the first introduction passage, and a second inside air inlet port connected to the second introduction passage. 
 
     
     
       4. The vehicle air conditioning system of  claim 3 , wherein the inlet case is provided with a first switching door for selectively opening or closing the first inside air inlet port and the first introduction port, and a second switching door for selectively opening or closing the second inside air inlet port and the second introduction port. 
     
     
       5. The vehicle air conditioning system of  claim 4 , wherein
 the first and second switching doors are controlled to open the first and second inside air inlet ports and close the first and second introduction ports to introduce only the inside air without introduction of the outside air, in an inside air mode; and 
 the first switching door is configured to be controlled to close the first inside air inlet port and open the first introduction port, and the second switching door is configured to be controlled to close the second inside air inlet port and open the second introduction port, in an outside air mode. 
 
     
     
       6. The vehicle air conditioning system of  claim 4 , wherein the first switching door is configured to be controlled to open the first introduction port and close the first inside air inlet port, and the second switching door is configured to be controlled to close the second introduction port and open the second inside air inlet port, in an inside/outside air separation flow mode. 
     
     
       7. The vehicle air conditioning system of  claim 6 , wherein the inside/outside air separation flow mode is performed in a heating operation condition in which a thermal load is equal to or higher than a predetermined level in a state in which an outside air mode is selected. 
     
     
       8. The vehicle air conditioning system of  claim 1 , wherein the upper end portion and the support part of the flow guide are disposed to form a “T” shape. 
     
     
       9. The vehicle air conditioning system of  claim 1 , wherein the upper end portion of the flow guide is disposed according to a position at which a predetermined area of a suction port of the scroll case is split into one-half. 
     
     
       10. The vehicle air conditioning system of  claim 1 , wherein a lower end portion of the flow guide, extending radially and horizontally, is disposed flush with the second partition member. 
     
     
       11. The vehicle air conditioning system of  claim 10 , wherein blocking protrusions are continuously formed in a circumferential direction on inner and outer surfaces of the blower fan to clog a gap between an edge portion of the lower end portion of the flow guide and the inside surface of the blower fan and a gap between an inner peripheral edge portion of the second partition member and an outside surface of the blower fan. 
     
     
       12. The vehicle air conditioning system of  claim 11 , wherein at least a portion of the blocking protrusions is formed in an overlapped shape in a state in which it is vertically spaced apart from the edge portion of the lower end portion of the flow guide and the inner peripheral edge portion of the second partition member. 
     
     
       13. The vehicle air conditioning system of  claim 1 , wherein the second partition member is mounted, wherein an inner peripheral edge portion thereof has a predetermined gap with an outside surface of the blower fan, and the flow guide is mounted, wherein an edge portion of a lower end portion thereof has a predetermined gap with an inside surface of the blower fan. 
     
     
       14. The vehicle air conditioning system of  claim 1 , wherein
 the outlet port of the scroll case includes a first outlet port connected to the upper passage, and a second outlet port connected to the lower passage; 
 the air inlet port of the air conditioning case includes a first air inlet port connected to the first outlet port, and a second air inlet port connected to the second outlet port; and 
 the air conditioning case is configured, wherein a passage between the first air inlet port and an upper vent is separated from a passage between the second air inlet port and a lower vent. 
 
     
     
       15. The vehicle air conditioning system of  claim 14 , wherein the upper vent is a vent for discharging air around a vehicle window glass, and the lower vent is a vent for discharging air to a vehicle floor. 
     
     
       16. The vehicle air conditioning system of  claim 1 , wherein the flow guide includes a vertical section, a straight section, a first end of which is connected to the vertical section with an obtuse angle with respect to the vertical section, and a horizontal section to which a second end of the straight section is connected with an obtuse angle with respect to the horizontal section.